隕石的起源

在墜落到地球之前,這些石質或金屬物體暴露於宇宙射線。這種轟擊產生的氦為揭示過去的行星災變提供了新的線索

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S. FRED SINGER is director of the Science and Environmental Policy Project in Fairfax, Va., and professor at George Mason University. A pioneer in the use of rockets (captured German V-2s) to investigate the upper atmosphere and near-Earth space, he was the first director of the National Weather Satellite Center. He devised the cosmic-ray method of dating meteorites and was among the first to study the origin and evolution of the Martian moons.

More by S. Fred Singer
大眾科學 Magazine Vol 191 Issue 5This article was originally published with the title “The Origin of Meteorites” in 大眾科學 Magazine Vol. 191 No. 5 (), p. 36
doi:10.1038/scientificamerican1154-36
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